# Relationship between light absorbance and solution concentration?

explain the relationship between light absorbance and solution for the solution which obeys the Beer-Lambert law.

Essentially, the relation is given by:

Abs = Ebc where E is the molar absorptivity of the solute, b is the pathlength of the cell, and c is the concentration of the solution. The concentration of the solution affects how much light is able to pass through the solution (transmission). The more concentrated the solution, the lower the transmission of light through that sample. The value of E is specific for a given compound, and is wavelength dependent. The transmisson of light through the sample is the ration of the intensity of light exiting the sample versus the intensity of light which entered the sample ( T = I(out) / I(in) ). The absorbance is given by taking the -log T. For solutions following Beers law, there is an applicable range in which the solution shows a linear relation between absorbance and solution concentration.Is Heiss's law the same as the conservation of energy?
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**Answer:**Essentially, the relation is given by:

Abs = Ebc where E is the molar absorptivity of the solute, b is the pathlength of the cell, and c is the concentration of the solution. The concentration of the solution affects how much light is able to pass through the solution (transmission). The more concentrated the solution, the lower the transmission of light through that sample. The value of E is specific for a given compound, and is wavelength dependent. The transmisson of light through the sample is the ration of the intensity of light exiting the sample versus the intensity of light which entered the sample ( T = I(out) / I(in) ). The absorbance is given by taking the -log T. For solutions following Beers law, there is an applicable range in which the solution shows a linear relation between absorbance and solution concentration.